TPA3139D2 Series
10W 3.5V–14.4V Inductor-free stereo QFN analog input Class-D audio amplifier
Manufacturer: Texas Instruments
Catalog
10W 3.5V–14.4V Inductor-free stereo QFN analog input Class-D audio amplifier
Key Features
• 2 × 3 W into 8-Ω, 1% THD+N, 7.4-V supply2 × 10 W into 8-Ω, 1% THD+N, 13.5-V supplyFast Turn-on time < 15 msWide supply range 3.5-V to 14.4-VLow idle current and small footprint for portable audio applications4 x 4 mm2 QFN-24 package20-mA (12-V) idle current with 1SPW modulation> 90% Class-D efficiencyFlexible audio solution:MUTE signal for fast enable and enable of outputsSingle-ended or differential analog inputsSelectable gain: 20 dB and 26 dBIntegrated Protections and Auto Recovery:Pin-to-pin, pin-to-ground, and pin-to-power short circuit protectionThermal protection, undervoltage protection, and overvoltage protectionPower limiter and DC speaker protectionSpread-spectrum modulation reduces EMI emissionReduced solution size and cost:EN55022 EMC compliant with ferrite bead filtersNo external heatsink required2 × 3 W into 8-Ω, 1% THD+N, 7.4-V supply2 × 10 W into 8-Ω, 1% THD+N, 13.5-V supplyFast Turn-on time < 15 msWide supply range 3.5-V to 14.4-VLow idle current and small footprint for portable audio applications4 x 4 mm2 QFN-24 package20-mA (12-V) idle current with 1SPW modulation> 90% Class-D efficiencyFlexible audio solution:MUTE signal for fast enable and enable of outputsSingle-ended or differential analog inputsSelectable gain: 20 dB and 26 dBIntegrated Protections and Auto Recovery:Pin-to-pin, pin-to-ground, and pin-to-power short circuit protectionThermal protection, undervoltage protection, and overvoltage protectionPower limiter and DC speaker protectionSpread-spectrum modulation reduces EMI emissionReduced solution size and cost:EN55022 EMC compliant with ferrite bead filtersNo external heatsink required
Description
AI
The TPA3139D2 is a 10-W stereo Class-D audio amplifier, featuring a fast turn-on time of <15 ms and mute function. It consumes low idle current of only 20-mA (12-V) and can operate down to 3.5-V, allowing for longer audio playback. Along with a small, 4 x 4 mm2QFN package, the TPA3139D2 is optimized for 2-cell or 3-cell battery-powered systems with the space constraints. In addition, the Spread Spectrum Control enables the use of inexpensive ferrite bead filters while meeting EMC requirements for system cost reduction.
To further simplify the design, the TPA3139D2 integrates essential protection features including undervoltage, overvoltage, power limit, short circuit, overtemperature, as well as DC speaker protection. All of these protections support automatic recovery.
The TPA3139D2 is a 10-W stereo Class-D audio amplifier, featuring a fast turn-on time of <15 ms and mute function. It consumes low idle current of only 20-mA (12-V) and can operate down to 3.5-V, allowing for longer audio playback. Along with a small, 4 x 4 mm2QFN package, the TPA3139D2 is optimized for 2-cell or 3-cell battery-powered systems with the space constraints. In addition, the Spread Spectrum Control enables the use of inexpensive ferrite bead filters while meeting EMC requirements for system cost reduction.
To further simplify the design, the TPA3139D2 integrates essential protection features including undervoltage, overvoltage, power limit, short circuit, overtemperature, as well as DC speaker protection. All of these protections support automatic recovery.
